theres only about 3 - 4 threads about midpipes on this forum. and i want some answer quick from some expert

i am hoping that my eisenmann sports exhaust(section 3) will come in tomorrow and i can get it in stall at the shop.

1) coming from the DP for the e90, does the resonator or the 2nd cat comes first?
2) if i want custom mid-pipes, H-pipes is louder and deeper than X-pipes?
3) do people usually cut the 2nd cat out or the resonator out?

i feel SOOO confused on this... i don't even know what kind of questions to ask so i guess i will keep asking as it goes.